Update changelog and bump version from 1.1.1 to 1.2.1

Author: jeffschwartz

README.md

@@ -4,7 +4,7 @@ Buster busts your browser cache problems!
 
 ## Version
 
-1.1.1
+v1.2.1
 
 ## Features
 
@@ -285,6 +285,10 @@ await buster(paramsConfig);
 
 ## Changelog
 
+### v1.2.1
+
+This release only encompasses changes to the project's README.md file, specifically for the addition of the solicitation to 'Buy me a coffee'.
+
 ### v1.1.1
 
 This release only encompasses changes to the project's documentation in this README.md file.